== Built-In Functions ==
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==== base64 decode( arg:string ) : string ====

This function decodes the given string that must be Base64 (defined in RFC 2045) encoded. 

"/test" = "[" + base64_decode("aGVsbG8gd29ybGQ=") + "]"; 
# will be the string "[hello world]" 

clone( arg:element ) : element 

This function returns a clone (copy) of the given argument. 

create( name:string, . . . ) : nlist 

This function returns the named list which is the result of the execution of the structure template identified 
by the given name; the optional extra parameters must be pairs of key and value and will add or modify 
the result accordingly (a bit like with nlist). 

# description of a CD mount entry (but the device is unknown) 
structure template mount_cdrom; 
"device" = undef; 
"path" = "/mnt/cdrom"; 
"type" = "iso9660"; 
"options" = list("noauto", "owner", "ro"); 
# our first mount entry is the CD coming from hdc 


'''debug( string message )'''

This function prints the given message on stdout when debugging is enabled with the DEBUG USER 
flag. 
{{{
# print the value of x if it is positive 
if (x > 0) 
debug("x is positive: " + to_string(x)); 
}}}